Tooth point construction



July 19 1932. w, PA 1,868,247

TOOTH POINT CONSTRUCTION Filed July 3, 1951 .2 72 #9 77 for.

Pitch! July 19, 1932 :omr on. or cnrcaeo, rumors room ronrr coxsrauorron Application fled July 8, 1881. Sum 80. 548.8.

This invention relates to improvements in tooth point construction and more especially such construction adapted for excavatmg shovels. My invention is ada ted, for ex- 5 ample, for use in connection wit excavating shovels, buckets, dredges and other excavating devices. a The construction here shown 1s applicable for use in connection w1th teeth Y commonly used on the forward or cutt1ng 1 edge of excavating shovels and similar devices of the character referred to.

Among the features of my invention 1s a provision of tooth oint construction having a detachable tip. y means of this construction, the tip may easily be removed for renewal, replacement, repair or other purposes.

Other features and advantages of my 1nvention will appear more fully as I proceed with my s cification.

so In that orm of device embodying the features of my invention shown in the accom panyin drawing- Figfi is a tog/(plan view; Fig. 21s a new taken as indica lathe line 2 of F1 1; and

as Fig. 3 is a view t en as indicate by the line 3 of Fig. 2.

As shown in the drawing,.18 may indicate the bottom of the shovel carrying at its forward edge the tooth supporting stubs or lugs 13. These lugs may be mounted in any suitable manner. For example, as here shown, each lug may be attached to the bottom of the shovel 18 by means of the upper and lower parallel arms 16 and 17 respectively.

10 indicates a detachable tooth point which is wedge-shaped and provided with a square tapered socket 11. The upper face and the lower face of the tooth point are each pro vided with a round countersunk opening 12 extending through to the socket 11. The tooth point 10 is symmetrical so that either side having a hole 12 may be uppermost.

The reces or socket 11in the tooth point 10 is adapted to receive the tooth supporting lug 13 which is squared and tapered and shaped to fit the recess 11 so that when the tooth eloint is drawn up on the lug it will ent e four sides thereof. The lug 13 is so short enough to permit the toothpoint to be adapted to seatin one of the countersunk attaching the tooth point 10 to the lug 13.

For example, as here shown, the upper surface of the lug 13 is provided with a groove 25 ads ted to accommodate a bolt 26.. A short istance above the upper end. of the groove 25, the lug 13 is considerably enlarged and provided with a recess 27 adapted to ac-' commodate the nut 26 of the bolt 26. A circular hole 28 forms a continuation of the groove 25 into the recess 27. The bolt 26' is provided with a countersunk head 26 openings 12 in the tooth point 10.

When the parts are in position shown in Fig. 2, it is obvious that tightening of the nut 26" will drawthe tooth point 10 tightly up to the lug 13. t 2

. The tapered recess 11 in the tooth point 10 is open at the forward end. 30 indicates a detachable tip adapted to be mounted on the end of the tooth point to form' virtually a continuation thereof. This mounting is ac-' g complished in the following manner:

The detachable tip 30 is provided with a wedge-shaped part or extension 30 adapted to be inserted in the ta ered recess 11 in the tooth point 10. 31 indicates a wedge-shaped" member with a spring tail 31 lyin beside the extension 30 on the tip inside 0 the recess 11. When the tooth point 10 is drawn on to the lug 13, the spring tail 31" is adapted to be engaged by the end 13" on the lug 13. Such engagement forces the wedgeshaped member 31 tightly between the upper wall of the tooth point 10 and the extension 30' on the ti thus holding the tip firml in position. he tail 31 being made 0 spring material is permitted to bend over sufliciently to permit the tooth point 10 to be drawn completely in 1place without breakage of the parts.

While have shown and described certain embodiments of my invention, it is to be understood that it is capable of many modifications. Changes, therefore, in the construction' and arrangement may be made without departing from the spirit and scope of the invention as disclosed in the appended claims, 1

in which it is my intention to claim all novelty inherent in my invention as broadly as permissible, in view of the prior art. What I regard as new, and desire to secure I by Letters Patent, is: 4

1. In combination with a tooth-supportin .lug and a detachable tooth point mounte thereon, a detachable tip carried by the tooth point and held in osition by a wedge hav- 10 mg a part engaged y the lug when the point is mounted thereon. a

2. In combination with a tooth-supporting lug having detachably mounted thereon a tooth point with a tapered recessytherein, a ll detachable tip having a part extending into said recess and a wedge member located in said recess adjacent said part, said wedge member being 'rovided with a tail adapted to be engage y the lug when the point is mounted thereon.

3. In combination with a tooth-supporting lug having detachably mounted thereon a tooth point with a tapered recess "therein, a detachable tip having a part extending into N said recess and a wedge member located in said recess adjacent said part, said wedge member being provided with a spring tail adapted to be engaged by the lug when the point is mounted thereon. In witness whereof I have hereunto set my hand this 27th day of June 1931.

, .JoIiN w. PAGE. 

